If you are talking new hardware the answer is simple, there basically are no 2 meter only base radios made today. If you want a 2 meter only base you will have to use a mobile and a power supply.
If you want specifically a base radio that does 2 meters, and don't mind it having the other 4 to 10 bands, there are a very few on the market, but they tend to be at the upper end of the price ranges. Oh, and most of them run on 12 VDC just like a mobile would, so you still need a power supply for it.
Example of current production "base" radios that include 2 meters:
Kenwood TS-2000, $1500
Icom IC9100, $3500
Flex 5000A with 2M/70cm, $4900
While a current production mobile plus a power supply can be had brand new for under $200, depending on what you want.
If you talk about used hardware the field is larger, naturally. But "base" 2 meter radios have always been in a minority compared to "mobile" radios.
Unless you want the other features of the base radios, multiple bands, generally high end features, etc, just get a mobile with features you like and a power supply and be done with it.
T!
(edit) Whoops, while I was writing this others were responding with similar stuff...DOH!